The 23-year-old Swiss full-back has a release clause that expires on 1 July.

Ricardo Rodriguez has been strongly linked with a move to ArsenalGetty Images

Arsenal have been warned that Ricardo Rodriguez's release clause expires on 1 July. The highly-rated Swiss left-back has been strongly linked with a move to the Emirates, but the North London club have until the end of this month to conclude a deal at the pre-agreed price.

Wolfsburg sporting director Klaus Allofs has told Arsenal and other clubs reportedly interested in the 23-year-old star's signature that his price could escalate if they allow the release clause to expire. Despite this, Rodriguez has already confirmed his desire to leave his current club.

"We are on the alert and we are prepared. He will not get cheaper, rather the opposite," Allofs told Kicker amid Arsenal's reported interest. According to the German publication, the full-back can leave the Bundesliga club this summer for £19m ($27.2m).

Rodriguez's agent, Gianluca Di Domenico, recently said that his client is looking to leave the German club and will listen to offers from Italy, despite rumours of Arsenal being interested. "Today, Ricardo Rodriguez has a termination clause, which was not there before. You have to respect the contracts," he told TMW Radio.

Di Domenico did, however, deny speaking to Roma sporting director Walter Sabatini about the player. "Ricardo loves Italy so much, so surely if there was a serious proposal we would see," he said. "But we need to see if there will be. I spoke with him [Sabatini] on the phone a few times, but never about Ricardo Rodriguez."